Docenv

Description

Simple wrapper for dotenv that let us describe (document) configuration parameters and define default values for them if not defined.

Installation

Using npm:

npm install docenv

or using yarn:

yarn add docenv

How to use

1- You'll need a .env file at your projects roots location.

Sample .env content:

SERVER_PORT=7337

2- Create a docenv-config.js with defaults parameters and text explaining usage.

module.exports = [
	{
		"key": "SERVER_IP",
		"help": "IP to listen on the server",
		"value": "0.0.0.0" // Optional Default value
	},
	{
		"key": "SERVER_PORT",
		"help": "Port to listen on",
		"value": "80",
		"regex": /^(80|7337)$/ // Optional Validation
	}
]

3- Initialize doc-env at your entry code.

Sample index.js content:

const { Config, initEnv} = require("docenv")

initEnv(require("./docenv-config.js"));

If some of your variables doesn't have default value and you .env doesn't define the value throw next error:

The envronment variable: [VARIABLE_NAME] must be defined in .env!
Help for [ VARIABLE_NAME]
        * Variable Help

4- Use it

httpServer.listen(Config.SERVER_PORT, Config.SERVER_IP, resolve);